Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0679f5701424de…

MALICIOUS

PDF

44.7 KB Created: 2021-05-14 20:08:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 892707b1744ea2a9605ed9b73718b9ce SHA-1: 5ac20caf39e8959cb378b15f226dd7c040843ff1 SHA-256: fc0679f5701424de042d36907b87363d92cb893756c78e430a1e2ecc37497565
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains multiple embedded URLs and a prominent external URI pointing to sites offering free Robux and game hacks, indicating a lure for potentially unwanted software or phishing. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure tactics. No scripts were extracted, but the presence of multiple malicious links suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/free-robux-no-download-game-hack PDF link annotation
    • http://mebliok.com.ua/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/kachifpro_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://mebliok.com.ua/images/mcpe-116_GM479516143.pdfIn PDF document text
    • http://mebliok.com.ua/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://wolfzscriptsIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45DB 25580 bytes
SHA-256: 223e28b2c196b8db2f65e1ed1aaa0906b7b5cfa0200f389ab1e0358f8aaaf113
font_01_sfnt_off00008085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8085 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 18824 bytes
SHA-256: a83584a15d83770571e134086905248a9fe783ccc3b424d06d308178a7ec7f42

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